/Engine/Plugins/Runtime/MeshModelingToolset/Source/ModelingComponents/Public/Drawing/UVLayoutPreview.h
Notify the UV Layout Preview that the source UVs have been modified
void UpdateUVMesh ( const [FDynamicMesh3](API\Runtime\GeometryCore\DynamicMesh\FDynamicMesh3) * SourceMesh, int32 SourceUVLayer )